Building-block.



c No. 814,975.

rBe it known 'that I ,JoHN -Lovnr'r,a ci'til zen of the United `States,and a resident of Martinsburg, in the county of Berkeley 'and State of West Virgin/ia, have invented a new and useful Improvement in uildng-Blocks,v

y of Which the following is a specification.

M invention relates toan'improvernent in building-blocks.

The object is to provide a substantial form of block which may be easily cast and which has a dead-air space extendin vertically therethroughfor theex'clusion 0F frost, cold, anddampness; and my invention consists in a block of suitable dimensions molded in a single piece from plastic material and having a dead-air space throu h the center extending throughout the lengt ofthe block f of blocks of this character. f

i In the accompanying drawings, Figure 1 isVv a view in perspective of my improved block. Fig. 2 is a transverse vertical section, and Fig. 3 is a View showinga section of Wall built ofmy improved blocks.` y'

A represents the block, which may be cast in an 'suitable dimensions, sav, thirty inches long y ten inches deep, which is a desirable size,pwith a width suited tothe thickness of the Wall to be built, and as the Walls built ofA these blocks are usually two blocks in thick- 4o ness'for ordinary Walls i prelcrto'mak'e the blocks intwosthicknesses, sothat 'in different "layers oints maybe broken, 1 as show'n in Fig',y

3,2 in av ternatelayers orlat intervalsin order, l

Y to tie'the Walls-.wv ln v.the center ofthe z"biook' 45 a deadairfspace lis cast. This dead-air space extends throughout the' length-of the ooky and from a point near the top nearly to the bottom therc'ofl At the .inner upper and Alower corners recesses 2 2 'are formed for air- JOHN LovErr, or yMixturnrsnoise; 1

j v .n i

specincaiicn of Lettearetene. rstsiedtrsicti;reos. application nea January micos. su'mlrsyainesa".

' spaces, and these e suit therequirements.` y

.overlapping .the mainorices th en ,Y l lessI beyonditheupper andlowends of th main dead-air space I1; overlapping-the other, as it Were, Awhereby to intersectany horizo' Ytal plane gassin throu h the biockvfnnd't vthereby e ectua ly vrec udcv the" 'sageogyff darn ness orfrost t formed byt eseblocks.` .,i i, IIn building a Wall` ofethese. bloeks; the ftwo layers are made'tobreak jintsjvertic'ally ,j and, ,as previously stated, they mayv bey tied o -I y horizontally by'reversin ',thepositionof'the outside'- and -inside bloei, alternating( 4Wide j andnarrow blocks in adjacent layersfcr' at 'in' tervals, as the'case may be; ar It may be desirable in ysome' buildings and forsome purposesto coat theinside'sugace with tar or p1tch,;1and this canibecdnein a Wall of this construction. A- lso itWillbe" seen that a Wall constructed -ofblocks oftljis form is substantial frost and-moisture proof, aswell as reproo and a houseor building`4 .511. thus constructed is necessarily cool 'and dry in summer and Warm inwirit'ert ,7; Of course the blocks mayvbe-cast'in'anyor namental c onguration on the outside t Slight changes might be .resorted` to 1n the form and arrangement of the various arts dei-1 scribed Without departure from t es iri and sco e of my invention, and hence, 8vo` not Wis Ato limit myself to theprecis'er c" struction herein vset forth;.but,

Having fully described my invention',` I Aclaim as new, and desire to' re b ters Patent,vis-

1. vAwall composed olf. h`ollow oc 1 ing recessed inner corners'extendmg throng out the lenvth yof the rr`blocken.said bloc 'placed in' the wall that the .corilfer" come together, these Ifecesse's'rav aving an upperand lovv'er recessed. corner, .therecesses extending 'through the length of the block,- whereby an `l1 interveningprojeetion'is formed, said projections laced against each othe n the Wall, i Where y channels are formed between the i upper and lower ends of. adjacent blocks cor- 5 responding to the Width of tWo of the cornerrecesses;

In testimony whereof I have signed this specification in the pence of two'subserib ing Witnesses.

JOHN LOVETT.

Witnesses:

VERNON E. HoDGEs, .WA'l'rs T. EsTABnooK. 

